navy submersible went down 15,000 compete before it malfunctioned last week. the jet with 239 on board disappeared last month. >>> school kids in coleman, 31 31 -- from colombia. are in the town of fondacian. 239 miles from bogota. authorities are trying to determine the cause. the driver who has managed to escape has been arrested. >>> if you fear disasters, chile is not place for you. there's a new study out that indicates chile could be the worst place in the entire western hemisphere to dodge mother nature. as lucia newman reports, it is time create an early warning system. >> reporter: chile's ash clouds circled the hemisphere at least five times. monitors volatile volcanos on yellow alert. >> we are monitoring 43 of the most active volcanoes with cameras, thermal and seismic sensors, so chile can have first rate information to put an early warning system on motion. >> reporter: but of all active volcanoes, one poses the biggest danger. we go see the via rica. it's long overdue for eruption. a few kilometers away are puccon they even ski off the slope you